Photos: New York City building explosion

CaptionNew York City building collapse

Mike Segar/Reuters

Residents and onlookers wait behind police tape near a five-story building that partially collapsed after a reported explosion in New York July 11, 2013. At least 10 people were injured when part of the building containing businesses and residences in Manhattan's Chinatown district collapsed after an explosion, fire officials said on Thursday. The cause of the explosion was not immediately clear, Fire Department Assistant Chief Robert Boyce said.

Residents and onlookers wait behind police tape near a five-story building that partially collapsed after a reported explosion in New York July 11, 2013. At least 10 people were injured when part of the building containing businesses and residences in Manhattan's Chinatown district collapsed after an explosion, fire officials said on Thursday. The cause of the explosion was not immediately clear, Fire Department Assistant Chief Robert Boyce said. (Mike Segar/Reuters)

New York City Firefighters arrive at the scene of a five-story building that partially collapsed after a reported explosion in New York July 11, 2013. At least 10 people were injured when part of the building containing businesses and residences in Manhattan's Chinatown district collapsed after an explosion, fire officials said on Thursday. The cause of the explosion was not immediately clear, Fire Department Assistant Chief Robert Boyce said.

New York City Firefighters arrive at the scene of a five-story building that partially collapsed after a reported explosion in New York July 11, 2013. At least 10 people were injured when part of the building containing businesses and residences in Manhattan's Chinatown district collapsed after an explosion, fire officials said on Thursday. The cause of the explosion was not immediately clear, Fire Department Assistant Chief Robert Boyce said. (Mike Segar/Reuters)